If I take a GPLv3 shower, that means the water has to be open-source, the resevoir has to be open-source, the Earth's water cycle has to be open-source.
People are 75% water give or take, so people have to be open source โข~โข, if people are open source then any plants fed by nutrients of corpses have to be open-source, the whole biosphere will end up being open-source.
Damn, how to open-source the entire planet in 1 easy step, take a libreshower people!